Sliding-door lock.



R. U. GIBSON. y l SLIDING DOOR LOCK.

APPLICATION FILED 00T.4. 1912.

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RUSSELL U. GIBSON, OF COLUMBUS, OHIO.

sLInINe-noon LOCK. i

Specification of Letters Patent. I, Patented Dec 31 1Q12 Application led October' 4, 1912. Serial No, 723,839. i

To all 'ww-m t may concern.'

Be it known that I, RUSSELL U. GIBSON, a

citizen of the AUnited States` residing at Columbus, in the county of Franklin and State of.()hio,` have invented a certain new and useful Improvement in SlidingDoor Locks, of which the following is a specification. The object of this invention is an improved construction of a sliding door lock whereby the number ot' projecting visible parts is reduced to a minimum.

The invention is embodied` in the construction herein shown and described. the features of novelty being pointed out in the claims.

In the accompanying drawings--Figure l is a vertical sectional view of fractions of the two members of a sliding door with thc interiors of two cases of the lock exposed, parts being in section. to illustratedetails, the door members being in open or separated position. Fig. 2 shows the parts of the lock closed together and the bolt latched. Fig. 3 is a vertical section on the line Fig. 2 looking to the left. Fig. 4 is a view of the upper ends of the meeting edges of the door.

The device comprises 'two cases, one for each member of the sliding door one case containing thebolt and its controlling parts, and the other case the latch for the bolt and its controlling parts In the views 5 designates the bolt case and 6 the bolt therein. The bolt 6 is supported to slide horizontally in the lower end of its case between suitable guides 7 7a. The bolt 6 is actuated by means of the long arm of a lever 8 pivoted at 9. The short'arin of the lever 8 has connected to it a plunger 10 that slides horizontally between the upper Wall of the case and a guide 11. The free end of the bolt 6 works through a hole in the lower end of the face plate of the bolt case and the free end of the plunger 10 works through a hole in the upper end of said case but a spring 12 secured at 13 on the bolt case presses on the long arm of the lever 8 tending normally to hold the free end ot' the plunger projected through the face plate and the bolt withdrawn from locking posi tion. The free or locking end of the bolt 6 is provided with a hole 6a to receive the engaging end of the latch bolt hereinafter described. The connection of the lever 8 with the bolt and plunger can be of the ordinary pin and slot construction, as

the latch bolt said shou showngto permit the bolt move'in right lines.

14 designates the case for @the latch bolt and its controllingI parts.

15 designatesthe latch bolt which is mounted to slide vertically between the face plate of the case and suitable guides 16, 16". At its rear side the latch bolt l5 is cut out or recessed at different depths to form two shoulders 17 and 18 and secured at 19 on case is a horizontally standing spring 20 adapted to engage either of ders. VVhen the spring 19 is released and the latch bolt is raised the spring and plunger to 20 engages the shoulder 18 and holds thclatch bolt out of bolt-engaging position. as seen at the right hand side of Fig. 1. When the spring 2O is depressed, as by a push but ton 21, the latch bolt 6 is liberated for projection into engagement with the bolt, as seen in Fig. 2. The spring 20, however, by

engaging the shoulder 17limits the -down.

ward projection of the latch bolt when the bolt 6 is not in position to receive it.' The latch is normally pressed downward by a spring 22 fixed in a stud 23 on the latch bolt case. The latch bolt has a lateral projection 15a to be acted on by a key 211 to raiseV that bolt when it is desired to separate the door members. It will be observed, therefore, that the latch bolt can be left normally raised and released by the push button 21 in which condition 'the doors 'can be closed without locking and the locking effected when desired by pressing the push button. Or the latch bolt can be left normally down in which condition the doors are automatically locked when closed. ln the closing of the face plate of thc latch bolt case against or toward the face plate of the bolt case the push pin 10 is pressed inward and the bolt projected. The bolt engaging end 15" of the latch bolt is beveled so that if the latch bolt is down it is first pushed up to admit the vbolt 6. i

As shown in Fig. 4 the closing edges of the door members can be furnished with male and female astragals 25 and 2G respectively so that when the bolt case is put into that member df the door containing the female astragal the projecting plunger, and the projecting bolt (if it be asitcan be, made so as to project somewhat) are kept hidden from view.

What I claim is: l. A sliding door lock comprising a case containingI a horizontally sliding bolt, anti a bolt rejecting plunger with ineens be tween t e plunger and bolt for normally holding the plunger projecte and the bolt Withdrawn from locking position, coin'biiie with a coperating case containing a con-` cealed latch bolt, and Ineens for projectingA said latch 'bolt into engagement with the bolt when one case is brought against the other. y

2. A sliding door lock comprising a case containing a horizontally sliding bolt, and e bolt projecting plunger with means between the plunger and holt for normally holding the plunger projected and the bolt Withdrawn from locking position, combined With a cooperating case containing e vertically sliding concealed latch holt, and means for projecting sai latch bolt into engageineeze mentwitli the bolt nchen one cese is broiight 2e against the other.

3. sliing door lock comprising e cese containing a horizontally Sliding bolt, and e ooit progecting plunger with means between the "plunger and bolt Vfor normally holding 25 holrling seid `latch bolt normally out of so letcliing position and means for projecting said latch bolt into engagement with the bolt when one case is brought against the otheri 1Witnesses:

im B. PAUL, Gnonm M. FiNoKiiL.

* y RUSSELL n.- eineon. g

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